The present invention relates to a device for testing an angle of view of a camera. The present invention may comprise: a first light source which is arranged to face an image sensor, and has a first width and a second width longer than the first width; and a second light source and a third light source which are disposed on both sides of the image sensor in the direction of the first width, respectively. The present invention can inhibit an interference of the light source or a bracket supporting the light source by reducing the number of light sources. In addition, since it is possible to measure the angle of view of a camera by reducing the light sources, the present invention can reduce the manufacturing costs of a device for testing an angle of view of a camera.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A device for testing an angle of view of a camera, the device comprising: an image sensor; a first light source disposed over the image sensor, wherein the first light source comprises a first side having a first width and extending in a first lengthwise direction, and a second side having a second width extending in a second lengthwise direction different from the first lengthwise direction, and wherein the second width is different from the first width; and a second light source and a third light source that are respectively disposed on opposite sides, in the first lengthwise direction, of the image sensor.
2. The device of claim 1 , wherein the second width is longer than the first width.
3. The device of claim 1 , wherein the image sensor receives a light emitted from the first light source to a direction perpendicular to the second side at 0˜0.7 field, and the image sensor receives a light emitted from the first light source to a direction perpendicular to the first side at 0˜0.5 field, when the image sensor is divided from a center of a light reception region to a farthest point at 0˜0.7 field.
4. The device of claim 3 , wherein the image sensor comprises: a first side having a third width and extending in the first lengthwise direction; and a second side having a fourth width and extending in the second lengthwise direction, wherein the fourth width is shorter than the third width.
5. The device of claim 1 , wherein the first lengthwise direction is orthogonal to the second lengthwise direction.
6. The device of claim 1 , wherein the first light source is disposed in parallel with the image sensor.
7. The device of claim 1 , wherein the second light source or the third light source is disposed at an angle of over 180° along the first lengthwise direction.
8. The device of claim 1 , wherein the second light source or the third light source is disposed at a radius-identical imaginary spherical tangent surface.
9. The device of claim 1 , wherein at least one of the second light source and the third light source is configured such that a width thereof, measured in the second lengthwise direction, is shorter than the second width.
10. The device of claim 1 , wherein at least one of the second light source and the third light source is configured such that a width thereof, measured in the second lengthwise direction, is the same as the second width.
11. The device of claim 1 , wherein any one or more of the first to third light sources includes an LED lamp.
12. The device of claim 1 , wherein the first light source is arranged to face the image sensor.
13. The device of claim 1 , wherein the second light source and the third light source have a square cross-sectional shape.
14. The device of claim 1 , wherein the first to third light sources are so arranged as to form a perpendicular line on a surface facing a lens of the first to third light sources relative to a straight line formed as a shortest distance from the center of the image sensor to the first to third light sources.
15. The device of claim 1 , wherein the first light source is formed to have an area to cover the second and third light sources.
16. The device of claim 1 , wherein the first light source is used for measuring a vertical angle of the camera, and the second light source and the third light source are used for measuring a horizontal view angle of the camera.
17. A device for testing an angle of view of a camera, the device comprising: an image sensor; a first light source disposed over the image sensor, wherein the first light source comprises a first side having a first width and extending in a first lengthwise direction, and a second side having a second width extending in a second lengthwise direction different from the first lengthwise direction, and wherein the second width is different from the first width; a second light source disposed apart from the first light source; and a third light source disposed opposite to the second light source with respect to the first light source.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
May 28, 2019
July 14, 2020
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